I have both workouts, and while they are both good, I can see myself using B&G a lot, but I never seem to use L & G much.
B&G has some moves in you won't see in other Cathe workouts, and it has a nice fresh feel to it. It's a real glute (and leg) burner! I still haven't done the 'guts' segment of it yet, but I get a great workout from the 'butt' section alone. It definitely hits the glutes a bit more than any of Cathe's other lower body workouts, and would be great to alternate with L+G (not on consecutive days, though...if you want to be able to walk!).